package _06_For;
/**
 * 九九乘法表
 * 
1x1=1 
1x2=2 2x2=4 
1x3=3 2x3=6 3x3=9 
1x4=4 2x4=8 3x4=12 4x4=16 
1x5=5 2x5=10 3x5=15 4x5=20 5x5=25 
1x6=6 2x6=12 3x6=18 4x6=24 5x6=30 6x6=36 
1x7=7 2x7=14 3x7=21 4x7=28 5x7=35 6x7=42 7x7=49 
1x8=8 2x8=16 3x8=24 4x8=32 5x8=40 6x8=48 7x8=56 8x8=64 
1x9=9 2x9=18 3x9=27 4x9=36 5x9=45 6x9=54 7x9=63 8x9=72 9x9=81 
 * @author lenovo
 *
 */
public class For_04 {

	public static void main(String[] args) {
		// 9*9表格
		for (int i = 1; i <= 9; i++) {
			for (int j = 1; j <= 9; j++) {
				System.out.print("□");
			}
			System.out.println();
		}
		// 把正方形换成运算公式
		for (int i = 1; i <= 9; i++) {
			for (int j = 1; j <= 9; j++) {
				System.out.print(j + "×" + i + "=" + j * i + " ");
			}
			System.out.println();
		}
		// 形成三角形
		for (int i = 1; i <= 9; i++) {
			for (int j = 1; j <= i; j++) {
				System.out.print(j + "×" + i + "=" + j * i + " ");
			}
			System.out.println();
		}
	}
}